Cutting machine



May 20, 1924.

J. K. DIAMOND CUTTING MACHINE v Filed July s, 1923 2 snmvsnm 1 div/rm? Dame/20 Patented May 20, 1924.

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' J'AMESK. DIAMOND, or GRAND RAPIDS, MICHIGAN.

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Application filed Jul 3,

To. all whom it may concern: I

Be it known that I, JAMES K. DIAMOND, a citizen of the United States. residing at Grand Rapids, county of Kent, State of Michigan, have invented certain new and useful Improvementsin Cutting Machines, of which the following is a specification.

This invention relates to improvements in readily transported and at the same time is very powerful so that it may be effectively used for cuttingbelts and the like.

A further object is to provide an improved cutting machine in which large belts may be positioned for cutting without the necessity of passing the belt lengthwise into the machine. v

Further objects, and objects relating to structural details, will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification. The invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodi ment of my invention is clearly illustrated in the accompanying drawing, forming a part of this application, in which:

Figure I is a front elevationof my im proved cutting machine with the'h andle partially broken away, the machine being opened for the adjustment of the work therein; I i I i Fig. .II is a rear elevation partially in vertical section on a line corresponding to line 2-2 of Fig. III with the parts in ac tuated position; j

Fig. III is a plan view with the table partially broken away;

Fig. IV is a detailflvertical section on a line corresponding to'line 4-4 of Fig. 1;

Fig. V is a frontiperspective view of a 1923. Serial No. 649,251; i

i modified form of my invention in which the machinecannot be opened to permit the belt being adjusted laterally thereto, the actuating handle proper socket; and

Fig. v1 is a from smeapartisan vertical longitudinal section. I j i In the drawing similar reference characters refer to similar parts throughout the several views, and the sectional views are being removed from its.

taken looking in the direction of the little arrows at the ends of the sectionlines. J

Referring to the drawing, I provide abarlike base 1 which is horizontally disposed on edge, This base ,piece has alongitudinal channel, 2 in its upper edge in. which the out-- p I tingbarof wood or suitable material 3 is disposed. Atone end of this base piece are the fixed plate-like uprights 5. these. up, rights being disposed on the sides of the base piece and secured thereto bylmeans otthe rivets 6. At its other endthe barl has a tapered portion 1" with whichthe removable uprights 4,4 are engaged. these removable uprights being connected by a spacing block 5 conformed to receive the tapered part 1 of the base, these parts being a sliding fit so that when engaged the uprights 4i, 4. are et fectively supported. A. spring catch or dee tent 25 is provided for retaining the rcmovable uprights, the tapercdfbase member be ing. notched at 26 to receive this detent.

The cutter bar 7 is provided with a bladev 8, the blade being secured by means of the,

screws 9, thrust screws 10 being provided Theblade'is for adjustment of the blade.

supported by pairs of links 11 carried by the pivots 12 on the uprights 4E and 5, the links being a swinging fit between the uprights andembracing the sides of thecutter bar,

being secure-d thereto by the pivots13, so

that thecutter bar is guided ands'upported against lateral movement. Theuprightsi have segmental slots 27 therein which are engaged, by the pivot 13 which permits the J swinging of the detachable uprightsi to an" inverted position above and resting upon the knife bar as shown in Fig. I,1in. whichposi- I tion a belt may be introduced laterally into the machine.

The actuating lever 14: is

am ss and provided with an inwardly projecting slotted arm 16. This slotted arm is connected by the actuating link 17 to the cutter bar which is recessed at 18 to receive the link, the link being engaged with the pivot 13 atthis end of the cutter bar and connected to the lever by the pivot 19. The pivots 1 5, 19 and 13 are so arranged that a toggle action is secured as the cutter bar approaches the limit of its stroke. This is particularly desirable in a cutter of this character for cutting belts and the like.

To support the cutter bar when the detachable uprights 4 are disengaged fromthe base I provide a supporting arm 27 which is pivoted at28 on one of the fixed uprights 5 and provided with a slot 29 engaged by the pin 80 on the upright, thereby supporting the arm for limited pivotal movement. The arm has a segmentalslot 31 in its outer end engaged by thefpin 32 on the cutter bar, thus providing a sliding connection for the cut ter'bar to the arm, permitting theactuation of the cutter bar, and at the same time the arm forms an effective support forthe cutter bar when the detachableuprights 4 are disengaged. The arm is supported for limited pivotal movement so that the cutter cannot be operated without the removable uprights 4 being proper position'to sup-w port the knife and sustain the cutting strains. The supporting arm serves the double purpose of supporting the cutter to tacllitate adjustment and also supports the, knife so that it cannot fall on the operator.

I provide a work-table 20 which is formed of a sheet-metal stamping having a fiange 21 at one end'forming a support or rest and a flange 22 at its inner end secured to the side of the base piece by means of the screws 23.

A workguide 24 is secured at one end of the table. I

In the modification shown in Figs. V and VI the uprights 4 are fixed to the base piece the same as the uprights 5.. The arm and its connections are eliminated from this embodiment as they are not necessary.

With this arrangement of parts I secure a'cutter which is very light .in weight and at the same'time is'st'rong 'and'durable and easy'to manipulate.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is: v i j i i 1. In a cutting machine of the class described,the combination with'a horizontally disposed bar-like bed-piece, a pair of fixed uprights secured to the sides or said bedpiec'e'to pro ect upwardly at oneend thereof, the other end of said bed-piece being tapered: a pair of removable uprights havinga spacing block at their lower ends removably 'engageable with the tapered end of said'-be'd p'iece,a cutter'bar provided with a blade, pairs of supporting links therefor pivoted between said fixed uprights, said links being a swinging fit between said uprights and embracing the sides of said outtin-g baiiwhereby'it is laterally supported,

said removable uprights having segmental slots therein with which the pivot connecting the links to said cutter bar engages permitting the swinging of the removable uprights to a position above the cutter. bar, an actuating lever pivoted between said fixed uprights and having an arm at its inner end projecting over said cutter bar, and an actuating link connecting said lever to said outtuating lever pivoted between said fixed uprights and having an arm at its inner end projecting over said cutter bar, and an actuating link connecting said lever to said cutter bar.

3. In a cutting machine of the class described, the combination with a bed-piece, fixed uprights at one end of said bed-p1ece removable uprights at the other end of said bed-piece, a cutter bar. provided with a blade, pairs of supporting links therefor pivoted between said fixed uprights, said links being a swinging fit between said uprights and embracing the sides of s id Cuti ting bar whereb it is laterally supported,

said removable uprights having segmental slots therein withwhich the pivot connecting the links to said cutter bar engages permitting the swinging of the removable uprights to a position above the cutter bar, a supporting arm mounted on one of the fixed uprights for limited pivotal movement and having a segmentalslot in its outer end engaged by a pin on said cutter bar whereby the cutter bar is supported when the removable uprights are disengaged from the bed-piece. an actuating lever pivoted between said fixed uprlghts, and an actuating link connecting said lever to said cutter bar.

4. In a cutting machine of the class 'described, the combination with a bed-piece, fixed uprights at one end of said bed-piece, removable uprights at the other end of said bed-piece, a cutter bar provided with a blade, pairs of supporting links therefor pivoted between said fixed uprights, said links being a swinging fit between said uprights and embracing the sides of said cutting bar whereby it is laterally supported, said removable uprights having segmental slots therein with which the pivot connecting the links to said cutter bar engages permitting the swinging of the removable uprights to a position above the cutter bar, an actuating lever pivoted between said fixed uprights, and an actuating link connecting said lever to said cutter bar.

5. In a cutting machine of the class de-' scribed, the combination with a bed-piece, fixed uprights at one end of said bed-piece, removable uprights at the other end of said bed-piece, a cutter bar provided with a blade, supporting links therefor pivoted between said fixed uprights, a supporting arm mounted on one of the fixed uprights for limited pivotal movement andhaving a segmental slot in its outer end engaged by a pin on said cutter bar whereby the, cutter bar, is supported when the removable uprights are disengaged from the bed-piece, an actuating lever pivoted between said fixed uprights, and an actuating link connecting said lever to said cutter bar.

6. In a cutting machine of the class described, the combination with a bed-piece provided with fixed uprights at one end and removable uprights at the other, a cutter bar provided with a blade, supporting links therefor pivoted to said fixed uprights and cutter bar, said removable uprights having segmental slots therein with which the pivot connecting the links to the cutter bar engages, a supporting arm mounted on one of the fixed uprights for limited pivotal movement, said cutter bar having a sliding connection with said supporting arm permitting the movement of the cutter bar and supporting it when the removable uprights are disengaged from the bed-piece, and an actuating means for said cutter bar mounted on said fixed uprights.

7. In a cutting machine of the class described, the combination with a bed-piece provided with fixed uprights atone end and removable uprights at the other, a cutter bar provided with a blade, supporting links therefor pivoted to said fixed uprights and cutter bar, a supporting arm mounted on one of the fixed uprights for limited pivotal movement, said cutter bar having a sliding connection with said supporting arm permitting the movement of the cutter bar and supporting it when the removable uprights are disengaged from the bed-piece, and an actuating means for said cutter bar mounted on said fixed uprights.

8. In a cutting machine of the class described, the combination with a bed-piece provided with fixed uprights at one end and removable uprights at the other, a cutter bar provided with a blade, supportingi links therefor pivoted to said fixed uprights and ter bar mounted on said fixed'uprightsa 9, In a cutting machine of the class de scribed, the combination with a bed-piece provided with fixed uprightsat one end and removable uprights at the other, a cutter bar provided with a blade, supporting links therefor pivoted to said fixed uprights and cutter bar, a supporting arm mounted on one of the fixed uprights, said cutter bar having a sliding connection with said supporting arm permitting the movement of the cutter bar and supporting it when the removable uprights are disengaged from the bed-piece, and an actuating means for said cutter bar.

10. In acutting machine of the class described, the combination of a horizontally disposed bar-like bed-piece provided with pairs of uprights, a cutter bar, pairs of supporting links therefor pivoted between said uprights, said links being a swinging fit be tween said uprights and embracing the sides of said cutter bar whereby the bar is laterally supported, an actuating lever pivoted between one pair of saiduprights and having an arm at its inner end projecting over said cutter bar, and an actuating link con necting said lever arm to said cutter bar, the

end of the cutter bar being recessed to re ceive said actuating link which is engaged with the pivot of the adjacent supporting links, the pivot connecting the actuating link to the actuating lever being disposed so that a toggle action is secured as the cutter bar approaches the end of its work stroke.

11. In a cutting machine of the class described, the combination of a horizontally disposed bar-like bed-piece provided with pairs of uprights, a cutter bar, pairs of supporting links therefor pivoted between said uprights, said links being a swinging fit between said uprights and embracing the sides of said cutter bar whereby the bar is laterally supported, an actuating lever pivoted between one pair of said uprights and having an arm at its inner end projecting over said cutter bar, an actuating link connecting said lever arm to said cutter bar, theend of the cutter bar being recessed to receive said actuating link which is engaged with the pivot of the adjacent supporting links, the pivot connecting the actuating link to the actuating lever being disposed so that a toggle action is secured as the cutter bar approaches the end of its workstroke, and a work-table secured to one side of said bed-piece between said uprights.

12. In a cutting machine of the class de-' scribed, the combination of a bed-piece prothe pivots for said actuating link and lever vided'with pairs of spaced uprights, a cutter being disposed so that a toggle action is se- 1 bar, supporting links therefor pivoted becured as the cutter bar approaches the end tween said uprights, an actuating lever pivof its work stroke.

oted between one pair of said uprights and In witness whereof, I have hereunto set having an arm at its inner end projecting my hand and seal.

over said cutter bar, and an actuating link a connecting said lever arm to said cutter bar, JAMES K. DIAMOND. [11. s.] 

